Emergency brake-setting apparatus for elevators.



W. G. GANION.

EMERGENCY BRAKE SETTING APPARATUS FOR ELEVATORS.

APPLICATION FILED JUNE 10, 1913.

3 SHEETS-SHEET 1.

Patented May 5, 1914.

COLUIIIA PLANoolAPH co wASillNoroN, D. 6.

W. G. GANIO'N.

EMERGENCY BRAKE SETTING APPARATUS FOR ELEVATORS.

APPLICATION FILED JUNE 10, 1913.

Patented May 5, 1914.

a SHEETS-SHEET 2.

Guam

COLUMBIA PLANouRAPl-I JO-,WASHINGTON. D. c.

W. G. OANION.

EMERGENCY BRAKE SETTING APPARATUS FOR ELEVATORS.

APPLIOATION FILED JUNE 101-1913.

Patented May 5, 1914.

3 SHEETS-SHEET 3.

WILLIAM ASSOCIATION, OF BISBEE, ARIZONA, A CORPORATION To all whom it may concern:

Be it known that 1, WILLIAM G. CANION, a citizen of the United States, El Paso, in the county of 'El Paso and State of Texas, have invented new and useful Improvements in Emergency Brake-Setting Apparatus for Elevators, of which the following is a specification.

This invention is an improved emergency brake setting apparatus for elevators, especially for the type of elevators used in mines, the object of the invention being to provide operating the controlling element of the car such controlling element to brake applying position in an emergency and which setting apparatus may be controlled automatically by a speed governor of the hoisting apparatus and may also be manually set in operation by the engineer or attendant at the hoisting apparatus and thus cause the brakes to be applied and the car prevented from falling in the event that the cable should break or slip or that the hoisting apparatus should race or other accidents occur.

Another object is to provide an improved fluid pressure actuated apparatus arranged at one side of the path of the car or cage and having a setting element movable into the path of the controlling element of the car carried brake apparatus to move the said controlling element to brake applying position in the event of an accident.

Another object is to provide a series of such fluid pressure actuated mechanisms and a common controlling element therefor to cause the setting elements of all of said fluid pressure actuated mechanisms to be simultaneously projected into the path of the controlling element of the car carried brake apparatus so that it will be certain that the controlling element of the brake apparatus will be moved to brake applying position by one of said fluid pressure actuated mechamsms.

\V th the above and other ob ects in view the invention COl'lSlStS'lD. the construction,

ere

Gr. OANION, OF EL PASO, TEXAS, ASSIGNOR TO ARIZONA AUTOMATIC AIR Specification of Letters Patent.

residing at an improved apparatus of this character for or cage carried brake apparatus to move-- section. Fig. 3 is an enlarged OF ARIZONA.

EMERGENCY BRAKE-SETTING AEPARATUS FOR ELEVATORS.

Patented May 5, 1914.

Application filed June 10, 1913. Seria1No. 772,831.

combination and arrangement of devices hereinafter described and claimed.

In the accompanying drawings: Figure 1 is an elevation of an elevator car or cage, a hoisting mechanism therefor and an emergency brake setting apparatus constructed in accordance with my invention, the shaft of a mine in which the elevator operates being indicated in section. Fig. 2 is an inverted plan of the elevator car showing the compressed air brake apparatus thereof and also showing my improved emergency setting apparatus in operative connection therewith, the guides between which the car travels in its vertical movement being indicated in detail vertical central sectional-view of a member 0' the series of my improved emergency brake setting apparatus showing the construction of the cylinder and piston thereof in detail. Fig. at is a vertical sectional view of the same on the plane indicated on the line a-a of Fig. 3. Fig. 5 is a similar view indicated by the line b?) of Fig. 3. Fig. 6 is an end elevation of the same.

For the purposes of this specification the guides in a mining shaft are indicated at 1, the elevator car or cage at 2 provided with shoes 3 which engage the said guides and an air brake apparatus is indicated on the bottom of and carried by the car, such air brake apparatus including a cylinder 4: a reservoir 5 connected to the cylinder through a pipe 6 at the rear end of the cylinder and an intermediate pipe 7 arranged at a point near the center of the cylinder and provided with a check valve 8 to close against the back pressure from the cylinder, a brake shoe 9 operated by a piston in the cylinder and a reduction pipe 10 leading from the front end of the cylinder and provided with an emergency valve '11 and a controlling lever 12 connected to the said emergency valve and arranged to open the latter when the outer end of the said controlling lever is raised.

Within the scope of my invention any suitable type of car carried brake apparatus may be employed it being essential however that such apparatus be provided with a condirection causes the brakes to be applied. trolling element which when moved in one In accordance with my invention I provide a fluid pressure actuated mechanism including a cylinder 13 and a piston 14 having a rod 15 provided at its outer end with a suitable tappe-t 16. In practice the cylinder is provided at points intermediate its ends with bleeding grooves or bypasses 17 to equalize pressure and cause the piston to normally remain in retracted position near the rear end of the cylinder and engaged by a stop screw 18. cap or head 19 is also in practice screwed to the front end of the cylinder and is provided with a packing box 20 in which a gland or sleeve 21 is threaded and through the bore of which the piston rod extends. is threaded to the rear end of the cylinder to close the same sion thereof and the cap is provided with an angular wrench engaging portion 23. Any suitable number of such fluid pressure actuated mechanisms may be employed and hoisting apparatus 28 is illustrated ordinary type and the trated as of the centrifugal type geared to the shaft 30 of the hoisting apparatus by gears 31, 32, shafts 33, 3 1- and gears 35, 36, 37 and 38. Within the scope of my invention the governor and the hoisting apparatus may be of any suitable type or construction.

as of governor 27 1s illusopen said valve and thereby reduce the pressure in the front ends of the cylinders 13 and cause the tappet elements 16 to be projected. As the car moves past one of the cylinders 13 the projected tappet element 16 of such cylinder will catch the controlling element 12 of the car carried brake apparatus and turn such element to the angle required to cause said brake apparatus to operate and apply the brakes thereby stopping the car. Should the tappet element of one cylinder fail to operate the controlling element 12 the said controlling element would be engaged and operated by the tappet element of the next cylinder and since a num ber of such cylinders are employed the application of the brakes. and the prevention of an accident such as the dropping of a car will be assured.

I claim:

1. In an elevator, the combination. of a car carried brake apparatus having a movable controlling element and a series of fluid pressure actuated mechanisms disconnected from the car and having a common control ling element,

employed being dependent upon the depth These fluid pressure actuated mechanisms are connected together by a vertically arranged pipe 24 which is common to all of such mechanisms and through which they are charged with compressed air and by means of which the compressed air may be discharged from the front ends of their cylinders to reduce pressure on the front sides of the pistons and hence cause them to be moved outwardly or forwardly by the compressed air behind them so as to simultaneously project the tappet 16 of the piston rods 15 into one side of the shaft and in the path of the controlling element 12 of the car carried brake apparatus.

At the upper end of the pipe 24 is a reduction valve 25 having a control lever 26 arranged to be operated by the governor 27 of the hoisting apparatus 28, and the said pipe 24 is also provided with a reduction valve 29 having a manually operated lever 30 which may be used by the engineer or attendant to simultaneously ment of the brake apparatus.

In an elevator, the combination of a car carried brake apparatus having a movable controlling element a fluid pressure actuated apparatus having a setting'element movable into the path ment of the brake apparatus, a controlling element for said fluid pressure actuated apparatus a hoisting apparatus for the car, arranged to automatically operate the controlling element of the fluid pressure actuated apparatus.

In an elevator,

projected and their tappets to be arranged in the the controlling element of the brake a patrolling element or lever 12 of the car carratus, a common reduction pipe for the said series of fluid pressure actuated mechanisms, a manually operated valve for said common reduction pipe and a governor controlled valve for said common reduction pipe.

dropping.

For the purposes of this specification the 4. In an elevator, the combination of a pipe for said fluid pressure actuated mechacar carried brake apparatus having a movnisms. 1 able controlling element, a series of spaced In testimony whereof I aflix my signature fluid pressure actuated mechanisms, discouin presence of tWo Witnesses.

5 nected from the car and each having a set- WILLIAM G. GANION.

ting element movable into the path of the Witnesses: controlling element of the brake appara- J. W. GARNER, tus, and a common charging and reduction BENNETT S. JoNEs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

